PART 1 - SUBSTANTIVE AMENDMENTSThe substantive amendments in this Part are for purposes that includeż(a) introducing new benefit categories (sole parent support, supported living payment, and jobseeker support); and(b) providing for new obligations (obligations to work with contracted service providers, social obligations of certain beneficiaries with dependent children, and, for work-tested beneficiaries, new work test obligations that are drug test obligations); and(c) providing for, or adjusting provisions on, other matters (including the effect on a benefit of a warrant to arrest a beneficiary, when beneficiaries can be paid a benefit while overseas, backdating benefits, benefit end dates, and expiry and re-grant of specified benefits); and(d) making clearer the principal Act's structure (see section 62 and Part 1 of Schedule 2), by reorganising headings, and by relocating section 53A (which gives a right of appeal to a medical board on medical grounds against specified decisions).